Electric generator.



BEST AVAILABLE co v1 I,o.78.5,499. PATENTED MAR. 21, 1905.

w. KAISLING.

ELECTRIC GENERATOR. APPLICATION mum JULY 20, 1903.

4 SHEETS-SHEET 1.

WiTnesses InvenTur William Kaisling w. E3 AIIurnzgy BEST AVAlLABLE COP:

m 2 O T 9 m 1 H l s l 2 M P. R m m M M K 4 E A. J. V w m T N H A P m J .M Y M I m LN SEE IGL A H Km .TI WW Lu n A Winesses William Kalsling BEST AVAILABLE COP? I W. KAISLING.

ELECTRIC GENERATOR. APPLIDATION 2mm JULY 20, 1903.

PATENT-ED MAR. 21, 1905.

WiTnassfEs Wdham Kalslir g 6 Q- g 4011M only V UNITE STATES BEST AVAlLABLE COP;

Patented March 21, 1905.

PATENT QEEIQE.

WILLIAM KAISLINQI-OIF CHICAGO, IILLINOISLIASSIGNOR TO STROMBE CARLSON TELEPHONE MANUFACTURING NEW YORK, 'A' ooRPoRATIoN on NEW YORK.-

Re- COMPANY, OF. RocHEsTEE,

ELECTRIC GENERATOR.

SPECIFICATIOH forming of Letters fatent No. 785,499, dated March 21, 1905. a Application filed J'nly20,1 903. swarm. 166,273.

To all whom it m ty concern:

Be it knownthat 'I, VVIL IA KAIsLINe, a

citizen of the United States, residing at Chi-- act description, reference being-had to the. ac

companying drawings, forming apart ofthis specification.- i p My invention relates to electric generators, and particularly to generators of the peculiar .type commonly used in the telephone art for purposesof signaling.

My invention has for its principal object the provision of a generator which maybe cheaply manufactured andeasily assembled, but which at the same time shall be efiicient, durable, and

reliable in operation.

When at the present time a great .number of machines of the same kind are to be manufactured, it is desirableto make the parts thoroughly interchangeable, so that in assembling the machine no time or attention is required for the purpose of fitting -parts together. In the. manufacture of such interchangeable parts it has been 'found desirable to stamp or punch the various parts rather than to mill or 'machine them. Milling or machining operations are of a comparatively expensive nature, audit is a further object of my invention to -provide a'generator in which such machining may be largely dispensed with, the generator being assembled for the greater 'part from suitable sheet-metal stampings'. It

' has. heretofore been the common practice to form the armatures of such telephone-generators from a cylindrical bar of soft iron 'or of a large number of washers 0r stampings placed side by side upon the armature-shaft. It has also been the common practice to form thegenerator pole-pieces from a bar of soft iron of standard dimensions or to form the pole-pieces of cast-iron. While thesoft-iron polepieces are more desirable, they have heretofore been much moreexpe'nsive in con.-.

struction. Z

It is a principal ob ect of .my invention to ing the washer in place.

sectional view in plan, taken'on line 5 5 of i provide means whereby the generator polepieces and armature may be cheaply formed of soft wrought-iron. i

The improvements v:onstituting my invention will .be pointed out in detailin the following description.

The details of construction of my improved generator will be made clear by reference to the accompanying drawings, in which Figure'l is a perspective view illustrating a generator constructed in accordance with my invention. t-Fig. 2 is an end elevation of the same, in which the parts shown in Figs. 3 and 4 are removed more clearly to illustrate details of construction. Fig. 3 shows a clampingwasher.' Fig. 4 shows a screw for clamp- Fig. 5 is a cross- Fig. 2. Fig. 6 is a cross-sectional view taken on line 6 6 of Fig. 2. Fig. is a perspective view of the generator-armature before being wound with the necessary wire. Fig. 8 represents two generator pole-pieces as cut from a suitable bar of soft iron. Fig. 9 is'a perspective view of'a bar of soft iron from which individual generator-armatures are to be cut. Fig. 10 is a view in elevation of a generator end plate, and Fig. 11 shows a modified form of driving-washer.

As I have heretofore stated, it is one of the principal objects of my inventionto provide means whereby pole-pieces and armatures may be cheaply formed of wrought-iron of the softest grade, This result I accomplish by so designing the armature pole-pieces that they maybe cut from along rod .or bar of soft ironwhose cross-section is the same as that of the generator pole-pieces.-

' In Fig. 8 I have illustrated a pair of pole-- pieces which, as is shown, have been cut from a'single bar of wrought-iron. These polepieces 12 12 are provided each with an inner face 13, having a cylindrical surface whose axis of generation is coincident with the axis of rotation of the generator-armature. The bar from which these pole-pieces are cut may be of so true and perfect across-section that no machine-work whatever is necessary upon the pole-pieces in order to-adapt them for use in a generator of the highest possible efliciency.

A generator end plate 14 is illustrated in Fig. 10, as shown. in Figs. 5 and 6. This end plate is'.of uniform thickness throughout, and may therefore be stamped from a suitable sheet of brass or other metal. Ahole cut through the end plate at- 15 is adapted to receive a bearing 16 for the generator-armature. One of the end plates is provided for either end of the armature and pole-pieces of the generator. Upon the inner'faee of each of the end plates is secured a spacing-disk 17. This spacing-disk also may be stamped from sheet metal, as it is of uniform thickness throughout. This spacing-disk also is provided with an opening wh ch registers with the opening 15 in the end plate. Each of the bearings 16 is desirably provided with a shoulder at -18 and an inwardly-extending portion 19 of such diameter as to fit tightly within .the opening 15 of the'end plate 14 and the registering opening or hole in the spacingdisk 17.

holes of the end plate 14 and the spacing-disk 17, when, if found desirable, the inner end of the bearing may be slightly upset in a press .or by ahammer-blow or by indentations of a prick-punch near the periphery thereof, as

. illustrated at 20 20 in Fig. 10. In this manner a generator end plate and spacing-piece may be formed upon which no machine-work is necessary, except that the bearing 16 may be turned from a rod of stock in a turret-lathe or automatic screw-machine. This form of end plate is to be used in place of end plates of the prior art, in which the inner face of the end plate has been provided with a lug cast integrally therewith and which it has been necessary to turn to size in alathe or other suitable machine. The diameter of the spacingdisk 17 is such as to fit snugly against the inner cylindrical surfaces of the pole-pieces, the pole-pieces when assembled being held firmly against the spacing-disk at either end by permanent horseshoemagnets 21 21, which are slightly sprung in assembling to cause a slight inward pressure upon the..pole-pieces. It has heretofore been the practice to provide for the proper spacing of the horseshoe permanent magnets by suitable ribs caster otherwise formed upon the outer sides of the pole-pieces. In order to do away with the necessity for such ribs formed upon the soft-iron polepieces, I provideupon the back of a plate 22 a series of ribs 23' 23ladapted same "in proper relative position; is desirably secured to thefront pole-piece by means of the machine-screws 24 24:. .In order to hold the end plates more firmly in position, the machine-screws 25 25 are provided, each In assembling these parts the bearing 16 is pressed through the tightly-fitting illustrated by the line 41 in Fig. 5.

fi el "j .Z4Z.*=" A driving washer 48 is provided with a .hole'49, within "which this outwardly-extend- :ing end 47 of the spiral spring'is fitted. This drivingwasher is in some suitable manner BEST gyguAsLE COP:

passing through an end plate and into a screwthreaded hole 26 in.the end of the pole-piece.

The form of armature employed is of the shuttle or H type. As in the case of the polepieces; the generator-armature is cut from a bar of soft iron 27, the cross-section of which is that ofthe finished armature. A suitable length is-cut from the bar 27 and provided in any suitable manner with a shaft adapted to be mounted in the bearings 16 16 in the manner well understood. In cutting. the armature from the bar 27 I have found it desirable to cut a portionof the web 28 from either endof each armature. As will be apparent from an inspection of Fig. 7, a portion of the web 28 may be stamped out, this stamped-outpo rtion being common to two adjacent armatures. The corners of the web about which the armature winding is wound may be slightly rounded 01 chamfered by means of a socket punch or file. To either end of the armature-core 29, as cut from the bar 2?, is secured, by means of the screws 30 30, an armature-disk 31. To

the'disk at the right-hand end of the armature in Fig. 7 is secured the driving-shaft 32. The shaft 33 at the otherend of the armature is madehollow or tubular. An insulatingbushing 34 within this tubular shaft'33 serves to insulate a conducting-stem 35 from the metal parts of the armature. This conducting-stem is screw-threaded at its inner end and provided with a connecting-clip 36, secured in position between an insulating-washer 37 and a clamping-nut 38. There may be provided upon the disk at the right-hand end a connecting-clip 39, secured in position by means of the screw 40. To each of these connecting-clips is soldered one end of the armature-Winding, which is wound about the armatu re-core. This winding is diagrammatically Over the outer end of the armature-shaft 32 is slipped a cut pinion 42, by means'of which the armature is to. be driven through engagement with .the driving-gear 4C3. In many cases it is unnecessary that there be absolutely firm and rigid mechanical connection between the driv- 'ing-gear 4:3 and the armature-shaft, and in such cases it is desirable to provide intcrvening spring mechanism'todnsure the quiet running of the interrnes'hing gear-teeth. At

' the outer end of the pinion 12 I provide an annular groove 44, within which is coiled a spiral spring 45. One end of this spring is turned inwardly at 16 to engagea hole drilled through the pinion from the bottom of the annular groove 44:. The other end of the spring is tur nedxoutward at'right angles at firmly secured to the outer end of the shaft 32. In the preferred embodiment of my inven- IOC IIC

The projection-Mus so placed uponthe pin 4 ion as to register with the: notch 55 iiil the'f driving-washer. It will 1e seen; fnrtherinore;

that the peripheral length ofnthef notch ,55 is; such that a considerable relative. Inoveriientf" the notch 55.

tion I provide upon theouter e ndbf. I v. i

32 an extension 50, which fisin 'the fofrin of a" section of a hollow cylindrical cent-shaped opening 51 is: cut :throu washer 48, as shown at dv isters. with the projection 50 tocalujsetheiar mature'torotateivith the Washer; is desirably secured imposition upon the n 'i of theshai't 32 by means of a clanip'jn v 52, having screw-threaded:engage the hole 53 in the endf of i I; ,-2 ,;sn; i;eiih

As best illustrated inn-Figs; Y i gear- Wheel is provided withlfijn' outwardly v i i tio Ma i Pro can: be

ing shown asof the widthoflthree'gearfteeth between the pinion QQ'a-nd the. shafti 32 rnust ensue before the projec'tion54 engageslthe driving-washer 48 at one side or theother of; The purpose of this arrange ment is under normal conditions tol-permitf the armature to be driven by power transmit? ted entirely through the spiral spring-eithe if spring being preferably of such a, degree of' stiffness that the armature may be properly rotated without causing the. projection 54 of the pinion to strike either sideof the 55 ofv th e driving-washer.

If, however, the;

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I V st rs-restin erj reoiied about the 'i'nain shaft 'ssana *r'ests With in"the peripheral the ina'in" shaft J g arniter-joint 70 P n e'innerendf 'the'tuhular- A ollar'jtltl i; fastened in 'position heretof'agai'nsif 'thefc'ornpre'ssion of r rig 64" lisspr; QjbQin' coihpES'Sed I H I 'rica opening-attire inner f the doll'r 62 hher or other {suitable "insulating ma- 'Tiieriis -prnvided air-tarts left-hand certainsivifc'hing rnechan sn adap't'eji to b operated by the 'lon' spiral spring is broken or hecomesdefective;

- in operation, the projection of the pinionem.

gages the side of the notch on thewasher 4:8 to drive the armature by means of an unyielding connection with the driving-gear 43. UH-j. der certain conditions, as in central-estationf equipments, where the generator is to be'used, for code-signaling, a washerof the form shown in Fig. 11 may be employed, in which the width of thc' notch is such as totightly and firmly engage the projection 54. In this case the spiral spring may of course be omit-ii. ted, whereby a'firin rigid connection isestablished between the driving-gear 431 and thearmature to be rotated thereby.

While I have found it desirable to forth the;-

pinion 42 by milling or other suitable mas.

chine-work, the driving-washer employed is; of such shape that it maybe readily. stamped-- in one operation from sheetrnet-al. p At 56 I have illustrated atube adapted toconvey lubricating-oil to the:armaturebearing 16. v

The driving-gear 43 is rigidly secured to tubular counter-shaft Throughrthis tur bular counter-shaft extends amain 'shaft 58,;- to the right-hand end of which the drivin crank '59 'is rigidly secured,- by'means-pf a; screw-threaded hub '60 engaging the 'screw-..

il'ireade'd projection 61 upon theendof the,

main shaft.- The huh-portion islocked inailjustment by means of a collar 62, having an inwardly-extending peripheral flange 63.

feratoi', i is thegother terminal of the 'arina tare-winding; Thun'ndefr riorjmai'eonditions rthe arrnature3vindingjis:shn'nted by'falow-resisitancepathfthrough'theffraine of the gen ,eratorQI-r: When jthefcrank, 59 is manipulated to operate the generator-armature, the-longitudihal "movement of the shaft 58causeS a mOYementQof the connecting-spring 69' to break electrical connection vith the groundingspring 7l a nd to inakeiconnc'ction ivith the line-spring, 72, which forms one of the aotive terininalsofthe generator; Ihesc contact spri ngs may b'e m unted; upon "a suitable supportingiplate 73 by means of the screws 174 Zsflb thfie w m i tt' i i Suitably inshlated by'meansjof bushings 7 5 75, the I firMldt at s .7 o n u :ing gin'aterial; inse'rted hetiveen the "various sp in s-f. Th ai i ha 'e .Q' 'i tatably. rnountedf vvitliin the (tubular "countershafit.57 at" the right-tand m, While at the leftrhaindfr end i this (lriving-shaft is mounted within a suitableybfearingiil, which bearing is desili ibbjlbres sed or driven throiigh a suit-- 7 ableo peni ngu ZQ Einthe n 'per end of the left-Y -handgenerat6rLand .plate. The bearing 80, -i'n vhich rtlieitnhular counter-shaft 57 is rotatahly monnted, is'in the'same manner pressed ordriyen intolan gptningisl in thle right hand It will; seen-that rn'y'inyention provides agenerator of excellent mechanical construc- BEST AVAILABLE COP:

tion, but at the same time one which maybe cheaply manufactured in large quantities and one whose many parts maybe rapidly and accurately assembled;

scribed, the combination with a sheet-metal.

cured thereto.-

7 While I have herein shown and described one preferred embodiment of my invention, it -will be apparent to those skilled in the art that manymodifications may be employed without departing from the spirit thereof, and I do not wish, therefore, to limit myself Y to theprecise disclosure herein set forth; 7 but,

Having described my invention, I claim as new and desire to secure by LettersPatent- 1. "In an electric generator of the class described, the combination of a stampedsheetmetal end plate, with'a stamped sheet-metal.

ing the same diameter as that of the bore .of. the pole-pieces, and an armature-bearing fitting tightly through registering circular openings in said end plate and said spacing-disk.

4. In an electric generator of the class deend plate, of a sheet-metal spacing-disk, and an' armature-bearing having a shoulder resting upon said end plate and fitting tightly through suitab e openings in said end plate and said sp'acin -disk.,

5. In an electric generator of the class described, the combination with an end plate, of

a spacing-disk having the same diameter as that of the bore of the pole-pieces, and a cy-' lindrical armature-bearing having a shoulder resting upon said end plate and fitting tightly through circular openings in said end plate and said spacing-disk.

6. In an electric generator of the class demetal end plate, of a'stamped sheet1netal resting upon said end plate and fitt ng tightly spacing-disk haying the same diameter as that of the bore of the pole-pieces, and a cylin-' drical armature-bearing haying. shoulder through registering circular openings pf substantially the same size in said end plate and said spacing-disk, said bearings serving to secure said spacing-disk to said end plate.

'7. In a device of the class described, the combination with an armature mounted on an armature-shaft, of a pinion loosely mounted between said pinion and said armature-shaft.

8. In an electricgenerator of the class dc scribed, the combinationwith an armature mounted upon an armature-shaft; of a pinion loosely mounted upon said armature-shaft, a driving-rgear meshing with said pinion, a d riving-washer having a suitable opening engaginga crescent-shaped projection upon the end of said armature-shaft, a spiral spring connected at one end with said pinion-and at the other end with said driving-washer, said spring lying in an annular groove in said pinion, and

a projection upon said pinion. there being a notch in the periphery of said washer to receive said projection.

9. In an electric generator of theclass described, the combination with an armature mounted upon an armature-shaft, of a pinion loosely mounted upon said armature-shaft, a

driving gear meshing with said pinion, a d riving-washer having a suitable opening engaging a crescent-shaped projection uponthe end of said armature-shaft, a spiral spring connected at one end with said pinion and at the jection' upon said pinion, there being a notch in the periphery of said washer to receive said projection. n v

10, In a device of the class described, the combination with an armature mounted upon an armature-shaft, of a pinion loosely mounted upon said armature-shaft, a driving-washer having a suitableopeni'ng engaging a crescent-shaped projection upon theend of the armature-shait, yielding spring mechanism connecting said driving-shaft'and said pinion,

anda projection on said pinion lying within a suitable peripheral notch within said washer, the width of said, notch being such as to permit a slight degree of relative rotation between said pinion and said armature-shaft.

11. In an electric generator of the class dc scribed, the combination of an tar-mature mounted upon an armature-shaft, of a pinion loosely mounted upon said armature-shaft, a driving-gear meshing with said pinion, a dri ving-washer securely mounted upon the end of the, armature-shaft,'a spiral spring connected at one end with said pinion and at the other end with said driving-washer, sai'd s'pring lying in an annular groove in said pinion, and a projection on'said pinion resting within a notch inthe periphery of said washer, the width of said notch being such as topermit a slight relative movement between said pinion and said armature-shaft.

12. In an electric generator of the class described, the combination of an armature mounted upon an armature-shaft, of a pinion loosely mounted upon said armature-shaft, a driving-gear meshing'with said pinion, a driving-washer securely mounted upon the end of the armature-shaft, 'a spiral spring connected other endiwith said driving-washer, and a pro- BEST AVAILABLE COPE.

the periphery of said washer, the width of whereby a yielding driving connection is said notch being such as to .permit a slight relative movement between said pinion and said armature-shaft.

13. In a device of the class described, the combination with an armature mounted on an armature-shaft, of a pinion loosely mounted at the end of said shaft, a washer secured to the end of said shaft for holding said pinion thereon, a driving-gear engaging said pinion, a spiral spring connected at one end with said pinion and at the other end with said washer,

formed between said shaft and said pinion, and stops for limiting the range of said yielding spring connection and for causing unyielding connection between said shaft and pinion. In witness whereof I hereunto subscribe my name this 14th day of July, A. D. 1903.

WILLIAM KAISLIN Gr.

Witnesses:

LYNN A. VV'ILLIAMs,

JOHN STAHR. 

